docs(misconf): Update --tf-exclude-downloaded-modules description

[simar7]

Description

Improve the help text for --tf-exclude-downloaded-modules flag.

Related issues

• Close docs(cli): fix the description of the --tf-exclude-downloaded-modules flag #5416

Checklist

• I've read the guidelines for contributing to this repository.
• I've followed the conventions in the PR title.
• I've added tests that prove my fix is effective or that my feature works.
• I've updated the documentation with the relevant information (if needed).
• I've added usage information (if the PR introduces new options)
• I've included a "before" and "after" example to the description (if the PR is a user interface change).

[nikpivkin]

The documentation also needs to be updated: https://github.com/aquasecurity/trivy/blob/main/docs/docs/coverage/iac/terraform.md?plain=1#L36C41-L41

[simar7]

The documentation also needs to be updated: https://github.com/aquasecurity/trivy/blob/main/docs/docs/coverage/iac/terraform.md?plain=1#L36C41-L41

I think it still makes sense to me. What do you propose we update it to?

[nikpivkin]

@simar7 This flag does not skip .terraform

If you don't want to scan modules downloaded into the .terraform directory

[simar7]

@simar7 This flag does not skip .terraform

If you don't want to scan modules downloaded into the .terraform directory

OK - updated.